?? https_callbacks.c
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#include"datatypes.h"
#include"globalvariables.h"
#include"debug.h"
#include"system.h"
#include"tcp_ip.h"
#ifdef HTTP_WANTED
#include"http_server.h"
#include "FileSys.h"
/** \brief File not found message
*
* Message that will be displayed if a file with appropriate name (hash
* value) was not found.
*/
const char https_not_found_page[] = "HTTP/1.0 200 OK\r\nLast-modified: Mon, 17 May 2004 15:02:45 GMT\r\nServer: ESERV-10/1.0\nContent-type: text/html\r\nContent-length: 400\r\n\r\n<HEAD><TITLE>Viola Systems Embedded WEB Server</TITLE></HEAD><BODY><H2>HTTP 1.0 404 Error. File Not Found</H2>The requested URL was not found on this server.<HR><BR><I>Viola Systems Embedded WEB Server 2.01, 2004<BR><A HREF=http://192.168.2.3/index.htm>Did you wish 192.168.2.3/index.htm?</I></A><BR><A HREF=http://www.violasystems.com>www.violasystems.com - Embedding The Internet</A></BODY>";
/** \brief Brief function description here
* \author
* \li Jari Lahti (jari.lahti@violasystems.com)
* \date 09.10.2002
* \param hash Calculated file-name hash value. Used so that the whole
* file name doesn't need to be stored in RAM
* \param ses HTTP session identifier
* \return
* \li -1 - This function should return -1 if no file has been found
* \li 1 - This function should return 1 if a file with appropriate
* hash value has been found.
* \warning
* \li This function <b>MUST</b> be implemented by user application
* to work with local configuration
*
* This function is invoked by the HTTP server once a hash value of a
* requested file name has been calculated. User application uses this
* hash value to check if appropriate file is available to web server.
* Appropriate https session entry is then filled accordingly.
*
*/
INT16 https_findfile (UINT8 hash, UINT8 ses)
{
/* Access the File table on FLASH with given hash key */
unsigned char file_not_found = 1;
unsigned char* file_start_address = (void *)0;
unsigned short file_length = 0;
unsigned short file_pointer = 0;
unsigned char i = 0;
/* Access the File table on FLASH with given hash key */
/* and modify session File parameters */
for (i=0; FAT[i].hash; i++)
{
if (hash == FAT[i].hash)
{
file_not_found = 0;
file_start_address = (unsigned char *)FAT[i].file_start_address;
file_length = FAT[i].file_length;
file_pointer = 0;
}
else
continue;
}
if( file_not_found )
{
/* File not found, initialize return message */
//https[ses].fstart = 0xFFFFFFFF;
https[ses].fstart = (void *)(~0);
https[ses].funacked = 0;
https[ses].flen = __strlen((UINT8 *)&https_not_found_page[0], 1000);
https[ses].fpoint = 0;
return(-1);
}
/* OK, file found. */
/* Modify structure */
https[ses].fstart = file_start_address;
https[ses].flen = file_length;
https[ses].fpoint = file_pointer;
https[ses].funacked = 0;
return(1);
}
/** \brief Fill network transmit buffer with HTTP headers&data
* \author
* \li Jari Lahti (jari.lahti@violasystems.com)
* \date 09.10.2002
* \param ses HTTP session identifier
* \param buf Pointer to buffer where data is to be stored
* \param buflen Length of the buffer in bytes
* \return
* \li >=0 - Number of bytes written to buffer
* \warning
* \li This function <b>MUST</b> be implemented by user application
* to work with local configuration
*
* This handlers' job is to fill the buffer with the data that web server
* should return back through the TCP connection. This is accomplished
* based session identifer and values of variables in appropriate
* https entry.
*/
INT16 https_loadbuffer (UINT8 ses, UINT8* buf, UINT16 buflen)
{
UINT16 i;
// if( https[ses].fstart == 0xFFFFFFFF )
if( https[ses].fstart == (void *)(~0) )
{
/* Error site asked */
kick_WD();
for(i=0; i < (https[ses].flen - https[ses].fpoint); i++)
{
if(i >= buflen)
break;
*buf++ = https_not_found_page[https[ses].fpoint + i];
}
return(i);
}
/* Access some storage media (internal/external flash...)*/
for(i=0; i < (https[ses].flen - https[ses].fpoint); i++)
{
if(i >= buflen)
break;
kick_WD();
*buf++ = https[ses].fstart[ https[ses].fpoint + i ];
}
return(i);
}
#endif
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